struct Decompress [src]

Fields

interface: Reader
state: union { inflate: flate.Decompress, store: *Reader, }
Members

init (Function)
Source

  pub const Decompress = struct {
    interface: Reader,
    state: union {
        inflate: flate.Decompress,
        store: *Reader,
    },

    pub fn init(reader: *Reader, method: CompressionMethod, buffer: []u8) Reader {
        return switch (method) {
            .store => .{
                .state = .{ .store = reader },
                .interface = .{
                    .context = undefined,
                    .vtable = &.{ .stream = streamStore },
                    .buffer = buffer,
                    .end = 0,
                    .seek = 0,
                },
            },
            .deflate => .{
                .state = .{ .inflate = .init(reader, .raw) },
                .interface = .{
                    .context = undefined,
                    .vtable = &.{ .stream = streamDeflate },
                    .buffer = buffer,
                    .end = 0,
                    .seek = 0,
                },
            },
            else => unreachable,
        };
    }

    fn streamStore(r: *Reader, w: *Writer, limit: std.Io.Limit) Reader.StreamError!usize {
        const d: *Decompress = @fieldParentPtr("interface", r);
        return d.store.read(w, limit);
    }

    fn streamDeflate(r: *Reader, w: *Writer, limit: std.Io.Limit) Reader.StreamError!usize {
        const d: *Decompress = @fieldParentPtr("interface", r);
        return flate.Decompress.read(&d.inflate, w, limit);
    }
}  